Overview
The ITA25B3RL, produced by STMicroelectronics, is a bidirectional Transil™ array designed for high overvoltage protection in data transmission lines. This component is part of the ITAxxB3 series, which offers robust protection against transient overvoltages and electrostatic discharges (ESD). The ITA25B3RL is particularly suited for protecting voltage-sensitive devices such as MOS technology and low-voltage supplied ICs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Pulse Power (8/20 µs) | 300 | W |
| Peak Pulse Current (8/20 µs) | 40 | A |
| Stand-off Voltage (VRM) | 25 | V |
| Breakdown Voltage (VBR) | 24 - 31 | V |
| Clamping Voltage (VCL) @ IPP | 36 | V |
| Leakage Current (IRM) @ VRM | 1 µA | |
| Maximum Operating Junction Temperature | 125 | °C |
| Storage Temperature Range | -55 to +150 | °C |
| Package Type | SO-20 | |
| ESD Protection | Up to 15 kV (air discharge), 8 kV (contact discharge) |
Key Features
- High Surge Capability: The ITA25B3RL offers a peak pulse power of 300 W and a peak pulse current of 40 A (8/20 µs), ensuring robust protection against transient overvoltages.
- Bidirectional Protection: Provides up to 9 bidirectional Transil functions, making it suitable for protecting differential data transmission lines.
- Low Clamping Factor: The device has a low clamping factor (VCL/VBR) at high current levels, ensuring effective voltage clamping.
- Low Leakage Current: Features a low leakage current of 1 µA at the stand-off voltage.
- ESD Protection: Complies with IEC 61000-4-2 level 4 and MIL STD 883G-Method 3015-7, providing protection up to 15 kV (air discharge) and 8 kV (contact discharge).
- Separated Input/Output Configuration: The 4-point structure eliminates overvoltages introduced by parasitic inductances of the wiring, enhancing protection against fast transient overvoltages.
Applications
The ITA25B3RL is designed to protect differential data transmission lines, including:
- RS-232
- RS-423
- RS-422
- RS-485
It is particularly useful in protecting voltage-sensitive devices such as MOS technology and low-voltage supplied ICs from transient overvoltages and ESD.
Q & A
- What is the peak pulse power of the ITA25B3RL?
The peak pulse power of the ITA25B3RL is 300 W (8/20 µs).
- What is the maximum operating junction temperature of the ITA25B3RL?
The maximum operating junction temperature is 125 °C.
- What type of ESD protection does the ITA25B3RL offer?
The ITA25B3RL offers ESD protection up to 15 kV (air discharge) and 8 kV (contact discharge), complying with IEC 61000-4-2 level 4 and MIL STD 883G-Method 3015-7.
- What is the package type of the ITA25B3RL?
The ITA25B3RL comes in an SO-20 package.
- What are the typical applications of the ITA25B3RL?
The ITA25B3RL is used to protect differential data transmission lines such as RS-232, RS-423, RS-422, and RS-485.
- What is the stand-off voltage (VRM) of the ITA25B3RL?
The stand-off voltage (VRM) of the ITA25B3RL is 25 V.
- How many bidirectional Transil functions can the ITA25B3RL provide?
The ITA25B3RL can provide up to 9 bidirectional Transil functions.
- What is the leakage current of the ITA25B3RL at the stand-off voltage?
The leakage current at the stand-off voltage is 1 µA.
- What is the storage temperature range for the ITA25B3RL?
The storage temperature range is -55 to +150 °C.
- Is the ITA25B3RL RoHS compliant?
Yes, the ITA25B3RL is lead-free and RoHS compliant.
